In April 1990, our universe opened up to us in a whole new way. At the same time that the Hubble Space Telescope was launched and deployed, the most powerful space telescope ever was built. Although the tool started out with difficulty, Hubble has been in operation for a full …
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The Milky Way has merged with many other galaxies in its long lifespan, but stealing its history together has been a loving act. A new analysis of galactic clusters around the galaxy has now given us the most complete galactic merger history ever. And that data includes a previously unknown …
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The mystery of a galaxy that shouldn’t exist can now be solved. Dragon Fly 44, an obscure galaxy found in 2016 containing 99.99 percent dark matter, has been closely re-examined, showing lower and more normal proportions of dark matter. This means that we do not need to modify our models …
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It would be very optimistic to suggest that we have a good handle on dark matter. But even the slightest understanding we have can lead to the loss of something important. New observations from the Hubble Space Telescope have found much higher concentrations of dark matter in the order of …
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A rare fusion between clusters of galaxies has just revealed an even rarer face. Astronomers have found a large, low-frequency radio ‘bridge’ between the two, spanning a distance of 6.5 million light-years – evidence of a magnetic field that connects them in the early stages of the merging process. It …
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